JP2006293168A - Luminous type display body - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a luminous display body capable of securing a long light emission time and high luminance. <P>SOLUTION: Display 5 of characters, a pattern, etc., and a luminous layer 5 are provided on the top surface of a transparent resin-made substrate 4. The display 5 is printed on the top surface of the substrate 4 in non-luminous ink. The luminous layer 6 spreads widely on the top surface of the substrate 4 while covering the display 5. Further, the luminous layer 6 is in laminate structure of a plurality of unit layers, which are each formed by applying paste in a screen printing method and drying it. The wide-area luminous layer 6 serves as a light source to emboss the display 5, so a long light emission time and high luminance can be secured. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to a display body using a phosphorescent agent that stores light when it is bright and emits light when it becomes dark. Here, the display body is not only intended to display like a display panel or signs, but also has a different function from the display and has some display function added to it ( For example, furniture and electrical appliances).

  A typical example of an emergency display is an evacuation guide light. This evacuation guide light is provided with a panel made of a transparent plate with a display, and the display is generally lifted by a backlight (light source) such as a fluorescent light. And even if the main power supply fails, the backup power supply keeps lighting for a certain time (60 minutes), but when the backup power supply is exhausted, it becomes useless. Therefore, it has been proposed that the display on the panel is formed with a paint containing a phosphorescent agent so that the display can be visually recognized even if a power failure occurs.

  In general, this type of display preferably has as long a light emission time (afterglow time) as possible, and preferably has as high a luminance per unit area as possible in order to improve visibility. In general, characters, drawings and the like are displayed by a printing technique using a paste (phosphorescent ink) containing a phosphorescent agent as a material. In this case, when the phosphorescent agents are of the same type, the light emission time and the luminance are directly proportional to the thickness of the display portion (in other words, the amount of phosphorescent agent per unit area) and the particle size of the phosphorescent agent.

For example, Patent Document 1 describes a method using transfer as a method for increasing the thickness of the display portion. That is, in this method, on the surface of a vinyl chloride sheet, an indication of a pattern made of an adhesive having a strong adhesive force is formed by printing, while an adhesive having a weak adhesive force is uniformly applied to a pet film to adhere it. Sprinkle the phosphor layer with a large particle size phosphorescent agent, and then pass the pet film and the vinyl chloride sheet through the roller pair with the phosphorescent agent layer overlapping the adhesive layer of the vinyl chloride sheet. The process of transferring to the adhesive layer of the vinyl chloride sheet is used as one transfer process. By repeating this transfer process multiple times, the display of the vinyl chloride sheet is made thick with a large particle size phosphorescent agent. It is.
JP-A-2005-14582

  However, as in the conventional case, the display is made of phosphorescent ink and the display itself emits light, so the area of the phosphorescent part is small, so even if the display part is formed to be considerably thick, the light emission time and brightness are insufficient. In addition, the transfer method tends to cause a shift between the film and the sheet, so that it is difficult to realize a clear display.

  This invention makes it a subject to provide the display body which improved such the present condition.

  The display according to the invention of claim 1 is provided with a transparent, translucent or opaque base material, and a phosphorescent layer containing a phosphorescent agent is provided on the surface of the base material. Or a colored display such as a character or a pattern is applied on the surface of the phosphorescent layer or inside the phosphorescent layer in a state of overlapping the phosphorescent layer.

  The invention of claim 2 is the invention according to claim 1, wherein the substrate is formed of a transparent or translucent resin in the form of a sheet or a panel, and the colored display is applied to the surface of the substrate. The phosphorescent layer is formed by performing a process of applying a paste containing a phosphorescent agent and then drying it a plurality of times.

  The display body according to the invention of claim 3 is a phosphorescent display body in which a colored display containing a phosphorescent agent is provided on a sheet-like or panel-like surface made of a transparent, translucent or opaque material. The display is formed in a laminated form by repeating a process of applying a paste containing a phosphorescent agent to a substrate by screen printing and then drying the paste a plurality of times.

  In the first and second aspects of the invention, since the phosphorescent layer can have a large area irrespective of the display, the display can be lifted while the display surface of the display body emits light brightly. That is, the luminous layer plays the role of a backlight. Therefore, a long display time and high luminance can be ensured and a good display function can be obtained. The display may or may not have any light emission. If the display is luminescent, the color should be selected so that the contrast with the phosphorescent layer is clear.

  In this case, if the substrate is made of a transparent or translucent material in the form of a sheet or panel, the display can be seen from both the front and back sides. For example, an emergency display body that is suspended from the ceiling or an emergency display that protrudes from the wall As a display body, it is suitable as a display body in which both front and back sides are touched by human eyes. When the substrate is formed of a transparent or translucent material, light is irradiated on the phosphorescent layer from both the front and back sides of the substrate, which has the advantage that the phosphorescent performance can be improved.

  By the way, in order to lengthen the light emission time, it is necessary to increase the thickness of the phosphorescent layer as much as possible. On the other hand, the phosphorescent agent layer is formed by applying a paste (light-emitting ink) to the display body by printing or the like, but if the thickness of the paste layer is too thick, the surroundings will be sagged. Therefore, an invention like Patent Document 1 is proposed, and the problem is as described above.

  On the other hand, if comprised like Claim 2, the process of application | coating and drying of a paste can be repeated in multiple times, and the luminous layer of desired thickness can be formed easily and reliably, For this reason, light emission time is sufficient. A long and high-luminance display can be easily obtained. And, if the phosphorescent layer is formed in a plurality of layers, the layers may be shifted. However, in the invention of claim 2, the phosphorescent layer does not form a display such as a pattern. Even if is slightly deviated, the display definition is not affected. This is an excellent advantage of the second aspect.

  Furthermore, since the display is covered with the phosphorescent layer when the display is performed on the surface of the base material as in claim 2, for example, the surface of the display body is rubbed with an object between the manufacturing and installation, or Even if the display body is wiped with a mop after installation, the display will not disappear.

  There are various demands for the display body, and there may be a demand for a display in which characters, designs, etc. are formed by a phosphorescent layer. In this case, the thickness of the phosphorescent layer is preferably as uniform as possible in order to eliminate unevenness in light emission, and therefore, it is preferable to form the phosphorescent layer by printing. As a thick film printing technique, there is a screen printing method, but even in screen printing, a paste sagging before drying occurs, so the thickness is naturally limited, and about 200 μm is the limit. Therefore, a proposal as in Patent Document 1 is made, but the point that this includes a problem is as described above.

  On the other hand, when configured as in claim 3, the display of the phosphorescent layer is made to have a desired thickness by a simple process of repeating the process of applying and drying the paste several times using one type of mask. Therefore, it is possible to ensure a long light emission time and high luminance in a display body that emits light from a display such as a pattern.

  Next, embodiments of the present invention will be described with reference to the drawings.

(1). Structure of the first embodiment (FIGS. 1 to 3)
1 to 4 show a first embodiment, of which the structure is shown in FIGS. This embodiment is applied to an evacuation guidance display device installed on a ceiling or wall of a building or various facilities. FIG. 1 is a perspective view of a display panel 1 constituting the display device, and FIG. Although details are omitted, a lamp 3 for illuminating the display panel 1 from above is disposed inside the box 2.

  As an example of the base material, the display panel 1 includes a substrate 4 made of, for example, a PET resin. On the one side of the substrate 4, an indication 5 of an emergency exit character and an arrow, and a display 5 are completely overlapped. A phosphorescent layer 6 that spreads widely is provided. The display 5 does not store or emit light. The phosphorescent layer 6 extends over substantially the entire area exposed from the box 2, but the area 6 ′ and the shape in which the phosphorescent layer 6 is provided can be arbitrarily set as shown by a dashed line in FIG. Although only the outline of the arrow is displayed in a white state, the arrow may be displayed in a solid state.

  Although the thickness of the board | substrate 4 can be set as needed, in the case of an evacuation guidance display apparatus, what is necessary is just to set to about 2-3 mm like an existing product. In addition, when recycled PET resin is used as the material of the substrate 4, there is an advantage that it can contribute to the suppression of environmental load. Due to the characteristics of the evacuation guidance display device, the display 5 of this embodiment is dark green. When the phosphorescent layer 6 is made light green (yellowish green), the display 5 is clearly displayed and is suitable. In addition, the color type and density of the phosphorescent layer 6 can be arbitrarily set by selecting the type and amount of the pigment.

  3 is a cross-sectional view taken along the line III-III of FIG. 2 and shows a cross-sectional structure of the display panel 1 (however, for convenience of explanation, the thickness is displayed much larger than the actual ratio).

  As shown in FIG. 3, the display 5 is provided on the surface of the substrate 4, and the phosphorescent layer 6 is formed in a state where the display 5 is completely covered. And the luminous layer 6 consists of three unit layers 6a-6c. In the present embodiment, the unit layers 6a to 6c are clearly distinguished and displayed in relation to the manufacturing method described later. However, in practice, the unit layers 6a to 6c are often integrated and it is difficult to grasp the boundary. The thickness t of each unit layer 6a-6c is set to about 200 μm.

  There is no limitation on the method of applying the display 5. For example, various types of printing with printing ink applied to the plate, printing using an inkjet printer, transfer using a transfer film, handwriting using a brush or pen, pasting a thin transparent film with a pattern displayed, etc. The method can be adopted.

(2). Example of Manufacturing Method of Display Panel FIG. 4 shows an example of the manufacturing method of the display panel 1 described above. In this manufacturing method, both the display 5 and the phosphorescent layer 6 are formed by screen printing. The screen printing method itself is the same as the conventional method. Masks 9a and 9b are formed by applying a fine ridge 8 to the frame 7 and exposing the ridge 8 to make a plate, and then on the table 10 or the like. The substrate 4 is set on the substrate 9 and the masks 9a and 9b are overlapped. Then, the paste is uniformly applied on the ridge 8 and then the squeegee 11 is moved over the ridge 8 to move the paste to the predetermined portion of the substrate 4. It will be transferred to the position.

  In this method, as shown in FIGS. 4B and 4C, a first mask 9a for printing and forming the display 5 and a second mask 9b for printing and forming the phosphorescent layer 6 are used. Needless to say, the same photosensitive portion 12a as the display 5 is formed on the first mask 9a, and the photosensitive portion 12b having the same shape as the phosphorescent layer 6 is formed on the second mask 9b as shown by shading. Yes.

  After the display 5 is printed on the substrate 4 using the first mask 9a, the ink is dried (natural drying or forced drying using a drying device), and then the phosphor is stored on the substrate 4 using the second mask 9b. Layer 6 is printed. A normal printing ink is used for the paste as the material of the display 5. On the other hand, the paste used as the material of the phosphorescent layer 6 is mainly composed of a medium serving as an adhesive and a binder and a powdered phosphorescent agent. In the present embodiment, the paste is a fluid at room temperature. UV inks such as UV resins that exhibit properties and cure when irradiated with ultraviolet rays are used.

  In forming the phosphorescent layer 6, the paste that becomes the first unit layer 6 a is transferred to the substrate 4, and then the substrate 4 is placed in a drying furnace that is irradiated with ultraviolet rays and heated to dry the paste. Then, the second unit layer 6b and the third unit layer 6c are formed in the same procedure. Needless to say, the same mask 9b is used for printing the unit layers 6a to 6c. The ridge 8 of the second mask 9b is generally 50-100 mesh, but it is also possible to use a mask having a larger eye.

  In manufacturing the masks 9a and 9b, there are other processes such as cleaning of the basket 8, and in screen printing, there are other processes such as applying a paste to the basket 8 with a bucket. Since it is a normal printing method and is not directly related to the present invention, its description is omitted. Further, the printing process may be performed manually, or may be performed fully automatically or semi-automatically.

(3). Other embodiments (FIGS. 5 to 10)
FIG. 5 shows a second embodiment. (A) is a top view which shows a manufacturing process, (B) is BB sectional drawing of (A). In this embodiment, as a method for forming the phosphorescent layer 6 on the substrate 4, a frame 13 in which the substrate 4 fits perfectly is used. The depth of the frame 13 is a dimension obtained by adding the thickness of the phosphorescent layer 6 to the thickness of the substrate 4. After the paste 14 is uniformly applied on the substrate 4, the squeegee 11 is applied to the upper surface of the frame 13. The excess paste 14 is scraped off. Since this method does not use a screen mask, it is an advantage that a phosphorescent agent having a large particle diameter can be used.

  In FIG. 6, 3rd Embodiment which is another example of the position of the display 5 is shown. In the example shown in (A), the display 5 is interposed inside the phosphorescent layer 6, and in the example shown in (B), the display is applied to the surface of the phosphorescent layer 6. In FIG. 6, the cross-sectional display is omitted.

  FIG. 7 shows a fourth embodiment, where (A) is a view in use, and (B) is a separation view before use. In this embodiment, a transparent or translucent film 15 is bonded to the surface of the phosphorescent layer 6, and various displays 5 are given to the film 15. An adhesive layer 16 covered with a release paper (release paper) 17 is formed on the surface of the phosphorescent layer 6. In this embodiment, since the user can freely display the film, there is an advantage of high versatility.

  FIG. 8 shows a fifth embodiment. (A) is a top view, (B) is a partially broken front view of (A). In this embodiment, the display 5 including the phosphorescent layer 6 is provided on the upper surface of the substrate 4. That is, the display 5 is composed of the phosphorescent layer 6. The display consists of three unit layers 5a to 5c. (It may be 2 layers or 4 layers or more). This embodiment corresponds to claim 3, and the manufacturing method thereof is the same as the procedure for forming the phosphorescent layer 6 disclosed in the first embodiment. It is also possible to cover the phosphorescent layer 6 with a transparent protective layer 6d.

  FIG. 9 shows a sixth embodiment. In this embodiment, the phosphorescent layer 6 is provided on the base film (or sheet) 17, and the display film 15 is attached to the surface of the phosphorescent layer 6. The adhesive layer 16 covered with the release paper 17 is applied to the surface of the phosphorescent layer 6, and the adhesive layer 20 covered with the release paper 19 is also applied to the base film 18. Yes. In this embodiment, the user can attach the display body to an arbitrary place by peeling the release paper 19 of the base film 18.

  FIG. 10 schematically shows the seventh embodiment. In this embodiment, the phosphorescent layer 6 is formed by forming a recess 22 on the surface of various articles 21 such as furniture, electrical products, interior goods, and various devices and filling the recess 22 with a phosphorescent paste to solidify. A transparent film 23 for display having a display 5 applied thereto is attached to the phosphorescent layer 6. The present invention can also be applied to providing a luminous display portion on the surface of various articles.

(4). Others The present invention can be embodied in various ways other than the above embodiment. For example, when the phosphorescent layer has a plurality of structures, the material of each layer can be different.

  For example, a part or all of the phosphorescent layer may be a laminate composed of unit layers of different colors, or a phosphorescent agent having a long light emission time but a small amount of light emission per unit time as a material, and the light emission time is short. However, a unit layer made of a phosphorescent material as a raw material having a large amount of light emission per unit time is laminated. In the former case, a high decorative effect can be obtained by overlapping colors, and in the latter case, it is suitable for a guidance display device that is installed in a place where the guidance function in the initial stage of a power failure is particularly important, such as a facility where many people gather. It is.

  In addition, the inventions of claims 1 and 2 of the present application do not exclude the display of the pattern by the phosphorescent layer itself, and a luminous area having a large area is formed by the phosphorescent layer, and the light is not emitted in a state where it overlaps with this pattern. It is also possible to form a sex pattern. In this case, the luminescent design and the non-luminescent design may be different or basically the same design. As an example of the former, there is a case where a non-luminous character is superimposed on a figure such as a luminous star, for example, and as an example of the latter, a character having a thick line width is formed by a phosphorescent layer. For example, a non-luminous character having a thin line width may be formed in an overlapping state.

  The invention of the present application is a display of a fire hydrant, an outdoor danger area, a life jacket, a life buoy, a life squid, a road display board, a guard rail, a roadside band, a central divider, and a display of various display devices having existing light sources. It can be applied to a wide range of fields, such as replacement with panels. If the base material is made of a flexible material such as a thin sheet, rubber, cloth, paper, etc., there is an advantage that it can be easily applied to clothes, rubber boats, and the like. It can also be applied to books, notebooks, posters, and the like. Moreover, it is also possible to use the display which concerns on the structure of this application, and the display which consists of a single luminous layer on one base material, and such a thing is naturally contained in the structure of this invention.

  Although deviating from the present invention, it is also possible to form the display in a white state by forming a phosphorescent layer on the surface of the transparent substrate, excluding the display of characters and symbols, Also in this case, the above-described problems of the present invention can be solved and the same effects as the present invention can be exhibited.

1 is a perspective view of a display panel according to a first embodiment. It is a front view of the display apparatus which concerns on 1st Embodiment. FIG. 3 is a sectional view taken along line III-III in FIG. 2. It is a figure which shows the manufacturing method of the display panel of 1st Embodiment. It is a figure which shows 2nd Embodiment. It is a figure which shows 3rd Embodiment. It is a figure which shows 4th Embodiment. It is a figure which shows 5th Embodiment. It is a figure which shows 6th Embodiment. It is a figure which shows 7th Embodiment.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Display panel 2 Box of display apparatus 4 Board | substrate 5 Display 6 Luminous layer 6a-6b Unit layer 9a, 9b Screen mask

Claims (3)

A transparent or semi-transparent or opaque base material is provided, and on the surface of the base material, a phosphorescent layer containing an infinite number of phosphorescent agents is provided, and the surface of the substrate or the surface of the phosphorescent layer or the inside of the phosphorescent layer, Colored display such as letters and designs are given in a state of overlapping the phosphorescent layer,
Phosphorescent display. The base material is formed of a transparent or translucent resin in a sheet shape or a panel shape, and the colored display is applied to the surface of the base material, while the phosphorescent layer is a paste containing a phosphorescent agent. It is formed by performing the process of applying and drying several times.
The phosphorescent display body according to claim 1. A phosphorescent display body having a colored display containing a phosphorescent agent on a sheet-like or panel-like surface made of a transparent or translucent or opaque material,
The colored display is formed in a laminated form by repeating a process of applying a paste containing a phosphorescent agent to a substrate by screen printing and then drying the paste a plurality of times.
Phosphorescent display.

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